Question

我试图按照此处的描述进行操作：https://docs.djangoproject.com/en/dev/topics/db/optimization/#use-foreign-key-values-directly

我有一个这样的模型：

class Pizza(models.Model):
    last_name = models.CharField(max_length=80, null=True, default=None)
    baker = models.OneToOneField(User, to_field='username', parent_link=True, null=True,
                                       db_column="django_username", default=None, db_constraint=False)

我有一个比萨实例，我想要存储在Pizza表中的实际用户名，而不是点击用户表。

Answer 1

您始终可以通过附加＆＃34; _id＆＃34;来访问var referrer = HttpContext.Request.Headers["Referer"]; // referrer value is http://example.com/page-a.html if the above // hyperlink is clicked on page-a.html. If the user types the // new URL in the browser instead of clicking the hyperlink, // HTTP referer will usually be null, depending on the browser implementation.或ForeignKey列的实际值。到字段名称

OneToOneField

Django - 直接使用自定义db_column获取外键值

1 个答案: